Walk and talk.
Having a conversation with yourself helps to clarify what you stand for.
You don't have to be a mental case to talk to yourself. Being a writer is quite sufficient.
At least it is for me, and I don't consider myself crazy, although my mind is on the quirky side.
Nonetheless, talking to yourself is part of the toolbox as a writer.
Your job is to put your inner voice down on paper, and sometimes it takes a little work. By saying your sentences out loud, you get to taste them with your ears.
Like an actor
Talking to yourself is a technique many writers use when building an argument or creating a dialogue, and we usually rehearse it with ourselves as the audience. Much like an actor preparing a scene.
Personally, I talk to talk myself all the time, and I do it anywhere I can. In the bathroom, the car, and especially when walking.
I take walks several times a day to clear my head, and on those walks I have conversations with myself where I like to take opposite points of view.
It's my way of practicing the criticism from others to make sure I have a solid counterargument ready.
Pressure testing
It may sound a little paranoid, but I know from experience that my way of thinking as a seeker is often challenging to people. Mostly because I like to explore arguments that I never thought of before during a conversation.
If my reasoning isn't thought through, people will shoot it down immediately with a more traditional argument, and I don't like being shot down.
So, I have made it a habit to act out the critical argumentation and counter it with my own in advance to be sure it holds water.
It's my way of pressure testing my thinking, and over the years, it has turned out to be a nice little exercise for self-discovery.
It goes like this.